fix tests on windows

doc fix

translation update

translation update

translation update

translation update

translation update

translation update

Update html.php

$regex initialization added to clearify that it is passed by reference and filled from subroutines

translation update

translation update

translation update

hidden pages should not be indexed by search engines

When a page is marked as hidden (through the hidepages option) it should
not be indexed by search engines.

translation update

translation update

translation update

translation update

translation update

make Mailer use mail_isvalid()

the new version of the validator is static. But it makes sense to use a
single point of entry anyway, so instead of adjusting the use of the new
class, prefer the func

make Mailer use mail_isvalid()

the new version of the validator is static. But it makes sense to use a
single point of entry anyway, so instead of adjusting the use of the new
class, prefer the function.

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moved EmailAdressValidator to composer install #1970

make use of the new classes in tpl_get_action()

This function is now deprecated.

Tests even surfaced some smaller bugs :-)

overwrite item properties in constructor only

Othewise weird side effects may happen when a parent constructor
overwrites them again.

check file existance before autoloading

Even for our own namespace, file existance should be checked before
attempting to load it. Otherwise class_exist() check will throw errors.

Corrected external link syntax, now requires preceding whitespace. Fixes #936.

make Doku_Form members public again. fixes #1982

Various plugins access the form members directly currently.